phased
New member
- Apr 22, 2006
- 8
I am worried that I may be suffering from significant ground-reflections in my Antenna Patterns. -I am Pattern testing horn antennas at around 1GHz. The source horn has a fairly broad beamwidth. (so too do the Horn_Under_Test). I am Pattern Testing in my back garden in Rural Cumberland (very remote). I have limited resources and just have to mount the Source and Test horns 2 metres above the grassy ground.
Would you agree that in order to evaluate the effect of reflections, the following would need to be done:
(1) Peak the horns and then gradually move the horn under test directly backward from the Source Horn.
(2) Move the horn_under_test backwards over sufficient distance such that it definetely would have encountered a ground_reflected ray which was an integer number of half-wavelengths different in length than the direct ray.
(3) Observe for deep "dips" in received power as the horn_under_test is moved backward -If deep "dips" in received power are seen, then conclude that reflections are significant.
May i enquire as to whether this is a good technique for cheaply investigating the effect of reflections on my set-up?
Would you agree that in order to evaluate the effect of reflections, the following would need to be done:
(1) Peak the horns and then gradually move the horn under test directly backward from the Source Horn.
(2) Move the horn_under_test backwards over sufficient distance such that it definetely would have encountered a ground_reflected ray which was an integer number of half-wavelengths different in length than the direct ray.
(3) Observe for deep "dips" in received power as the horn_under_test is moved backward -If deep "dips" in received power are seen, then conclude that reflections are significant.
May i enquire as to whether this is a good technique for cheaply investigating the effect of reflections on my set-up?